Fire crews are on scene and are conducting atmospheric tests to determine the cause of the fumes.

A Tigerair spokeswoman said the flight TT680 landed safely in Brisbane.

“In accordance with standard operating procedures, the Captain made the decision to divert to Brisbane as a precautionary measure after an unusual odour was detected in the front section of the cabin,” the spokeswoman said in a statement.

The flight was met by ambulances and fire crews on the tarmac. Picture: 7 News BrisbaneSource:Channel 7

“The aircraft was met on arrival by emergency services as a precautionary measure and all passengers and crew are safely disembarking the aircraft at the gate.

“Engineers are currently investigating the potential cause. All customers will be re-accommodated on to alternative services as soon as possible.

“The safety and wellbeing of our customers and team members is always our highest priority.”